Abstract

We report on experiments of combined Particle Image
Thermography and Particle Image Velocimetry in a system with
continuous air exchange. The measurements were conducted in a rectangular container with air in- and outlet as well as heated bottom and cooled ceiling. Thermochromic liquid crystals were used as tracer particles, which provide a temperature depending reflection of different wavelengths.
First results prove the feasibility of the method, however, they
also pinpoint a number so far unsolved problems which must
be solved. Among these are the generation of the TLC tracer
particles, image filtering and colour calibration, which are
addressed in this paper.